ci: add GitHub Actions workflows

.github/workflows/qa-required.yaml

@@ -0,0 +1,32 @@
+name: qa-required
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  qa-required:
+    name: qa-required
+    runs-on: ubuntu-latest
+    env:
+      COMPOSE_PROJECT_NAME: breadcrumb-ci
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Create .env for CI
+        run: cp .env.example .env
+
+      - name: Start project services
+        run: |
+          docker compose up -d --force-recreate php db memcached
+          sleep 15
+
+      - name: Install Composer dependencies
+        run: docker compose exec -T php composer install --no-dev --no-interaction --prefer-dist --optimize-autoloader
+
+      - name: Run required QA gates
+        run: bin/qa-required.sh